Differes from plain pneumonia because of the location of
lesions.Such lesions are envolved by foci that are spread and seperated by pulmonar tissues.These tissues gather in a multiple fashion,producing more extensive lesions.It rarely comes up as a primary affection and , in majority of the cases , it`s either a complicated stange of an-already-installed infection or it
develops in an organism whose general state is very precarious.It strats, in most cases , from a simple catarrh of the respiratory passages, with high temperature, fits of cold
and diffuse pains in the thorax.The cough, at the beginning dry envolving to productive, with abunddant, frothy and purulent
expectoration,following respiratory insufficiency.It`s suggested that precautions should be taken when the early signs appear, so that the affection will not progress to a serious stage.